No research is available to provide details on the efficacy of vaping for quitting smoking during pregnancy. There is robust evidence that vaping is not effective for quitting smoking among adolescents. In view of the shortage of evidence, vaping is not recommend for cancer patients, although for all patients vaping is likely less dangerous than smoking cigarettes. The effectiveness of vaping for quitting smoking among vulnerable groups is uncertain. Most young e-cigarette users have never smoked, but there is a substantial minority who both vape and smoke.
Electronic cigarettes arent the best smoking cessation tool
Research from The Johns Hopkins University on vape ingredients published in October 2021 reveals thousands of chemical ingredients in vape products, most of which are not yet identified. Among those the team could identify were several potentially harmful substances, including caffeine, three chemicals never previously found in e-cigarettes, a pesticide and two flavorings linked with possible toxic effects and respiratory irritation. A 2021 study found that daily e-cigarette usage among tobacco smokers can increase the likelihood of quitting smoking by eightfold. Researchers assessed data from the 2014–2019 Population Assessment of Tobacco and Health study, focusing on smokers who were not planning to quit smoking at the start of the period.
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In Canada, e-cigarettes had an estimated value of 140 million CAD in 2015. A 2014 audit of retailers in four Canadian cities found that 94% of grocery stores, convenience stores, and tobacconist shops which sold e-cigarettes sold nicotine-free varieties only, while all vape shops stocked at least one nicotine-containing product. The number of e-cigarettes sold increased every year from 2003 to 2014. As of January 2018, the growth in usage in the UK has slowed down since 2013. E-cigarette sales could exceed traditional cigarette sales by 2023.
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Because of the short time e-cigarettes and vaping devices have been on the market, very little is known about the long-term effects of vaping. คอยล์ and subacute studies in human subjects have demonstrated changes in lung and cardiac function, with increased airway reactivity and lung inflammation, and increased heart rate and blood pressure in response to vaping (Tsai et al., 2020). Overall, the health effects of vaping JUUL pods remain unknown, despite the popularity of pod-based e-devices.
Another study assessed whether exposure to JUUL aerosol played a causal role in EVALI patients (Matsumoto et al., 2020). While the study revealed that 15 days of exposure to JUUL aerosol did not cause direct lung injury, the authors cautioned that chronic exposure to nicotine may still have a disruptive effect on lung physiology (Matsumoto et al., 2020). While these studies have laid the groundwork for assessing the acute impact of JUUL use on the respiratory system, much work remains to be done on the effects across the body. Comparing e-cigarettes to nicotine replacement therapy, a 2021 review found “moderate-certainty evidence” that e-cigarettes are more effective than nicotine replacement therapy for quitting smoking. The difference was minor, indicating that compared to NRT, e-cigarettes might lead to an additional four successful quitters per 100.
